#include "DHTesp.h"

#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0

const int DHT_PIN = 15;

#define LED_PIN 2

DHTesp dhtSensor;

void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  LCD.setCursor(15, 1);
  LCD.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}

void setup() {
  Serial.begin(115200);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");

  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    spinner();
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Online");
  LCD.setCursor(0, 1);
  LCD.println("Updating time...");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  delay(2000);
LCD.clear();
LCD.setCursor(0, 0);

  LCD.print("Temp: ");
  LCD.print(data.temperature);
  LCD.print(" C");

LCD.setCursor(0, 1);

  LCD.print("Humidity: ");
  LCD.print(data.humidity);
  LCD.print(" %");
  
  float temperature = data.temperature;
  float humidity = data.humidity;

  if (temperature > 30 || humidity > 70) {
    digitalWrite(LED_PIN, HIGH); // Bật đèn LED
  } else {
    digitalWrite(LED_PIN, LOW); // Tắt đèn LED
  }

  delay(1000);
}